Heater valve block refurb

[MikkiJayne]

So while the engine is out of my S8 I'm going through everything to make sure it's spot on. While flushing the heater cores I noticed the motor on the heater valve block had a lot of external rust, almost like it had been underwater for a while. I wonder how that might happen (yes, the drains were full of compost)

With it on the bench I took the motor off and surprise surprise it's very stiff to turn so dismantled it on the grounds I had nothing to lose. It had clearly been full of water









I reckon I can recover that...